Ariana Grande and Lady Gaga had some issues, too.

A tragedy swept the nation on Tuesday, in the form of a Twitter bug that erased tweets from famous people including Justin Bieber, Lady Gaga, Ariana Grande, and One Direction's Louis Tomlinson. According to BBC News, the bug also affected Ellen DeGeneres' famous Oscars selfie, which disappeared from the site for several hours (it has since been restored).

Both Ariana and Justin acknowledged the problem, with the former apologizing to her fans and the latter simply retweeting Twitter's own error message.

alright i think twitter is fixed... I'm sorry some of my replies & everything from last night had to get deleted. will make it up to you.

But the biggest mystery of this whole scenario is how did anyone figure this out? Ellen's selfie tweet was posted just a few weeks ago, but some of the others that the BBC says were affected are from 2011 and 2012. Are these celebrities just sitting around at night rereading their entire Twitter feeds, checking to see if anything from three years ago suddenly disappears? Are fans scrolling through entire Twitter histories before bed instead of reading actual books? Anything is possible.

Thankfully, all of the vanished tweets have been restored, so celebrities (and normal people) may now rest easily knowing that their deepest thoughts will not get accidentally deleted.